Hello R lovers, I have a vector of dates and signals. I want to filter the signals per day in a way that only the first signal of the day remains like this: Dates Signals Filtered Signal 2006-11-02 0 0 2006-11-02 1 1 2006-11-02 0 0 2006-11-02 1 0 2006-11-02 1 0 2006-11-02 0 0 2006-11-03 1 1 2006-11-03 1 0 2006-11-03 0 0 2006-11-03 1 0 2006-11-03 0 0
The thing is that I want to do it with matrix functions and not doing a loop but I still have no clue even after having spent time on it. Can somebody please help me? thank you! ----- Anna Lippel -- View this message in context: http://n4.nabble.com/filtering-signals-per-day-tp1577044p1577044.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
